1725, "the need very badly to urinate," from Latin micturitum, from past participle of micturire "to desire to urinate," desiderative of mingere "to urinate," from PIE *meigh- "to urinate" (cf. Sanskrit mehati "urinates;" Avestan maezaiti "urinates;" Greek omeikhein "to urinate;" Armenian mizem "urinate;" Lithuanian minžu "urinate;" Old English migan "to urinate," micga "urine," meox "dung, filth"). As during the final 20 minutes of a 4-hour film after drinking a 32-ounce Mountain Dew from the snack bar and the movie ends with a drawn-out farewell scene while Frodo is standing on the pier and wavelets lap audibly on the dock the whole time as if the director was a sadist set on compounding your torment.
micturition mic·tu·ri·tion (mĭk'chə-rĭsh'ən, -tə-)
The desire to urinate.
The frequency of urination.